(Of clothes or other fabric articles) able to be washed in a washing machine without damage:the padded cover is machine washable...
A mix of trendy and traditional styles is available and the entire range is made from machine washable, minimum-iron fabrics with many featuring tough Teflon coating.
Get one that's machine washable - and then wash it regularly.
All the new fabrics are machine washable and many are strategically vented for comfort.